The Secret of Secrets. Dan Brown

Robert Langdon, a respected professor of symbology, travels to Prague to attend a groundbreaking lecture by Catherine Solomon, a prominent noetic scholar with whom he has recently begun a relationship. Catherine is preparing to publish a sensational book that contains startling discoveries about the nature of human consciousness and threatens to upend centuries of established beliefs. But a brutal murder turns the trip into chaos, and Catherine suddenly disappears with her manuscript. Langdon finds himself targeted by a powerful organization and pursued by a terrifying assailant drawn from Prague's ancient mythology. As the story unfolds in London and New York, Langdon desperately searches for Catherine...and for answers. In a thrilling chase through the twin worlds of futuristic science and mystical lore, he uncovers the shocking truth about a secret project that will forever change our understanding of the human mind.